how to get daily data from hourly pandas date in python

main.py
import pandas as pd

# create a sample pandas data frame
df = pd.DataFrame({'date_column': pd.date_range('2020-01-01 01:00:00', '2020-01-02 23:00:00', freq='H'), 'data':range(48)})

# group the data on daily basis
day_wise_data = df.groupby(pd.to_datetime(df['date_column']).dt.date).sum() 

print(day_wise_data)
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main.py
            data
2020-01-01   276
2020-01-02   972
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